host, thereby improving its interface charge separation properties, photocurrent, and photocatalytic activities. Our findings not only provide new members of heterometallic titanium oxide clusters to enrich the metal oxide cluster family but also open up new possibilities for their photoresponses, which may play an important role in solar energy harvesting for sustainable chemistry.
异丙醇钛和
铬酸盐在
苯甲酸盐存在下的溶剂热反应产生了两个新的主客体簇,分别包裹了 Cs +或 H 3 O +,(H 3 O)@Ti 7 Cr 14和Cs@Ti 7 Cr 14。最显着的特点是Ti 7 O 7环被Cr 14 O 14环同心包围,形成刚性Ti 7 Cr 14主体。ESI-MS 和133Cs NMR显示整体框架结构被保留,而两个簇上的
苯甲酸酯
配体可能在溶液中不稳定。(H 3 O)@Ti 7 Cr 14和Cs @Ti 7 Cr 14均表现出良好的紫外-可见光响应特性和光催化活性,吸收边缘延伸至 780 nm。Cs@Ti 7 Cr 14在室温和1 bar CO 2等温和条件下,在多相亚甲基
染料降解和均相CO 2环加成反应中都是一种有效的可见光响应光催化剂。根据机理研究,Cs+作为刚性客体,可以显着提高Ti 7 Cr 14主体的光生电荷分离效率,从而提高其界面电荷分离性能、光电流和光催化